The GDI Injector flow and jet test bench was developed to analyse important properties of GDI injectors. The use of explosion-proof components enables the use of n-heptane as a test medium.
The following test functions are available:
- Dynamic flow test in mg/inj (volumetric, gravimetric and shot-to-shot measurement)
- Static flow test in g/min (volumetric and gravimetric measurement)
- Determination of the opening and closing times
- Optical analysis of the injection jet (jet density, axial and radial jet geometry).
Highlights
Flow measuring station consisting of:
- Gravimetric measuring system with high-precision scales Down-Stream
- Volumetric measuring system with Coriolis measuring device Down-Stream
- Shot-to-shot measuring system for determining the injector rate curves and the injection behaviour over time
- Measuring system for determining the injector opening and closing times
Beam test chamber for lateral backlight investigations and radial light section recordings from below:
- Rotation of the injector holder by stepper motor
- Stepper motor-driven traversing of the bottom-view camera and the associated light unit
Test medium supply consisting of:
- High-pressure supply with piston pump and pressure control
for maximum test pressure of 500 bar - Low-pressure supply
- Temperature control of the test medium.
Windows-based user interface for automatic operation, manual operation and process parameterisation
Individually configurable test sequence
Clear visualisation of running processes and results
Touchscreen HMI
Technical data
- Dimensions: 4320 x 1845 x 2359 mm (L x W x H)
- Test medium: n-heptane
- High pressure: 40 – 500 bar
- Flow rate: approx. 1 l/min
- Temperature: 21 +/-1°C